sendMessage from popup to content.js not working in chrome extension
问题 I'm trying to make a popup interface for a chrome extension. I can't seem to send a message from the popup.html/popup.js to the content.js script. Here's what I have so far. When I click on the extension icon I get a button that says clickme. I click it and nothing happens, no errors in the chrome javascript console, and no message to content.js. Manifest { "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'", "manifest_version": 2, "name": "extensiontest", "version